Interchangeable last



G. G. CAMPINI.

INTERCHANGEABLE LAST.

APPLICATION FILED FEB. 8. 1919.

1,381,702. Patented June 14, 1921.

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fid' ATTORNEYS PATENT OFFICE.

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YINTERCHANGEABIQE LAs'r.

Specification of Letters Patent.

Patented June 14, 1921.

Application filed February 8, 1919. Serial No. 275,857.

To all whom it may concern:

Be it known that I, GEORGE G. CAMPINI, a citizen of the United States, and a resident of the city and county of San Franclsco, and State of California, have invented a new and useful Interchangeable Last, of which the following is a specification.

My invention relates to shoe lasts.

An object of the invention is to provide a last adaptable for use with a variety of different shapes and sizes of shoes.

The invention possesses other features of advantage, some of which, with the foregoing, will be set forth in the following description of the preferred form of my in vention which is illustrated in the drawings accompanying and forming part of the specification. It is to be understood that I do not limit myself to the showing made by the said drawings and description, as I may adopt variations of the preferred form within the scope of my invention as set forth in the claim.

Referring to the drawings:

Figure 1 is a side elevation of the last of my invention mounted upon a stand of known type, only the upper part of whlch is shown.

Fig. 2 is a front elevation of the last.

Fig. 3 is a side elevation of one of the interchangeable sole plates.

'Shoes vary widely in size, shape and heel height and when repaired should be worked on a last corresponding approx1- mately in these particulars to the shoe, to avoid changes in shape and the brealn'ng down of portions of the shoe structure.

My last comprises a heel block 2 provided with a socket of the usual form adapting it to seat on the end 3 of the standard 4 which is of a well known type. Projecting from one side of the heel block are two spaced arms 5, between and upon which the interchangeable sole plates 6 are supported. The sole plates comprise a top portion or plate 7 corresponding in general shape to the shoe to be repaired thereon. Extending longitudinally of the plate 7 on lts under side, and integral therewith 1s a r1b 8 which is adapted to lie between the arms 5 when the sole plate is in position on the heel block.

Since the heel height of shoes varies, it

is desirable that the sole plates be supported on the heel blocks at different angles, so that the sole structure of the shoe may not be broken down, a result occurring when a high heeled shoe is repaired on a relatively flat last. On each side of the rib 8 a boss 9 is formed. The lower edges 11 of these bosses are curved to match the contiguous edges of the arms 5 upon which the bosses lie. By varying the height of the bosses the sole plate is supported at varying angles with the heel block. For a high heeled shoe, a sole plate with high bosses is selected, while for a low heeled shoe, a sole plate with low bosses is required. Fig. 1 shows a sole plate with medium height bosses and Fig. 3 illustrates a sole plate with low bosses. The dotted lines of Fig. 1 show the position occupied by a low boss sole plate.

In order to prevent the sole plate from working off of the arms during use, means are provided for locking the heel block and sole plate together. The inner end of the rib 8 is formed to provide an upturned hook 12 adapted to mate with a downturned hook 13 formed in the heel block. The engagement or interlocking of these hooks when the sole plate is inserted between the arms of the heel block prevents disengagement of the sole plate from the heel block while the last is in the shoe. The sole plate is however readily detached by lifting it upwardly from the arms with a small turning movement about the hooks as a center.

As many sole plates as desired may be provided for one heel block, the plates being rights or lefts, and varying in size, curvature of the top plate and height of the bosses so that a last, approximately fitting any ordinary shoe is available. asts made in one piece are heavy and it is not practicable for repair men to have a large variety of shapes and sizes on account of the expense and bulk of a large assortment. The sole plates of my last are relatively small, light, readily interchangeable and inexpensive, so that for an equal investment a much larger assortment of sizes may be kept on the bench.

If desired, as an additional guard against movement of the sole plate on the heel block, a taper pin 14, attached to the heel block with a chain 15, is passed through the arms 5 and rib 8.

I claim: With respect to the top plane of the heel A last comprising a heel block with a pair block. 10 of laterally extending, parallel arms having In testimony whereof, I have hereunto recessed top faces, and a sole plate with a set my hand at San Francisco, California, 5 longitudinal, medial rib insertible between this 30th day of January, 1919.

the arms and having side bosses on the rib GEORGE-G. CAMPINI. for support on said arms in said recesses to In presence ofposition the plate at a predetermined angle C. S. EVANS. 

